问我能嗅到我的万用表和我的智能手机之间的BLE通讯吗？

EN

    /**
   A BLE client example that is rich in capabilities.
   There is a lot new capabilities implemented.
   author unknown
   updated by chegewara
*/

#include "BLEDevice.h"
//#include "BLEScan.h"

//String serverUUID = "FC:58:FA:88:56:59";
// The remote service we wish to connect to.
static BLEUUID serviceUUID("fff0");
// The characteristic of the remote service we are interested in.
static BLEUUID    charUUID("fff4");

static boolean doConnect = false;
static boolean connected = false;
static boolean doScan = false;
static BLERemoteCharacteristic* pRemoteCharacteristic;
static BLEAdvertisedDevice* myDevice;
//BLEAddress address(serverUUID.c_str());

static void notifyCallback(
  BLERemoteCharacteristic* pBLERemoteCharacteristic,
  uint8_t* pData,
  size_t length,
  bool isNotify) {
  Serial.print("Notify callback for characteristic ");
  Serial.print(pBLERemoteCharacteristic->getUUID().toString().c_str());
  Serial.print(" of data length ");
  Serial.println(length);
  Serial.print("data: ");
  Serial.println((char*)pData);
}

class MyClientCallback : public BLEClientCallbacks {
    void onConnect(BLEClient* pclient) {
    }

    void onDisconnect(BLEClient* pclient) {
      connected = false;
      Serial.println("onDisconnect");
    }
};

bool connectToServer() {
  Serial.print("Forming a connection to ");
  Serial.println(myDevice->getAddress().toString().c_str());

  BLEClient*  pClient  = BLEDevice::createClient();
  Serial.println(" - Created client");

  pClient->setClientCallbacks(new MyClientCallback());

  // Connect to the remove BLE Server.
  pClient->connect(myDevice);  // if you pass BLEAdvertisedDevice instead of address, it will be recognized type of peer device address (public or private)
  Serial.println(" - Connected to server");
  pClient->setMTU(517); //set client to request maximum MTU from server (default is 23 otherwise)

  // Obtain a reference to the service we are after in the remote BLE server.
  BLERemoteService* pRemoteService = pClient->getService(serviceUUID);
  if (pRemoteService == nullptr) {
    Serial.print("Failed to find our service UUID: ");
    Serial.println(serviceUUID.toString().c_str());
    pClient->disconnect();
    return false;
  }
  Serial.println(" - Found our service");


  // Obtain a reference to the characteristic in the service of the remote BLE server.
  pRemoteCharacteristic = pRemoteService->getCharacteristic(charUUID);
  if (pRemoteCharacteristic == nullptr) {
    Serial.print("Failed to find our characteristic UUID: ");
    Serial.println(charUUID.toString().c_str());
    pClient->disconnect();
    return false;
  }
  Serial.println(" - Found our characteristic");

  // Read the value of the characteristic.
  if (pRemoteCharacteristic->canRead()) {
    std::string value = pRemoteCharacteristic->readValue();
    Serial.print("The characteristic value was: ");
    Serial.println(value.c_str());
  }

  if (pRemoteCharacteristic->canNotify())
    pRemoteCharacteristic->registerForNotify(notifyCallback);

  connected = true;
  return true;
}
/**
   Scan for BLE servers and find the first one that advertises the service we are looking for.
*/
class MyAdvertisedDeviceCallbacks: public BLEAdvertisedDeviceCallbacks {
    /**
        Called for each advertising BLE server.
    */
    void onResult(BLEAdvertisedDevice advertisedDevice) {
      Serial.print("BLE Advertised Device found: ");
      Serial.println(advertisedDevice.toString().c_str());

      // We have found a device, let us now see if it contains the service we are looking for.
      if (advertisedDevice.haveServiceUUID() && advertisedDevice.isAdvertisingService(serviceUUID)) {

        BLEDevice::getScan()->stop();
        myDevice = new BLEAdvertisedDevice(advertisedDevice);
        doConnect = true;
        doScan = true;

      } // Found our server
    } // onResult
}; // MyAdvertisedDeviceCallbacks


void setup() {
  Serial.begin(115200);
  Serial.println("Starting Arduino BLE Client application...");
  BLEDevice::init("");

  // Retrieve a Scanner and set the callback we want to use to be informed when we
  // have detected a new device.  Specify that we want active scanning and start the
  // scan to run for 5 seconds.
  BLEScan* pBLEScan = BLEDevice::getScan();
  pBLEScan->setAdvertisedDeviceCallbacks(new MyAdvertisedDeviceCallbacks());
  pBLEScan->setInterval(1349);
  pBLEScan->setWindow(449);
  pBLEScan->setActiveScan(true);
  pBLEScan->start(5, false);
} // End of setup.


// This is the Arduino main loop function.
void loop() {

  // If the flag "doConnect" is true then we have scanned for and found the desired
  // BLE Server with which we wish to connect.  Now we connect to it.  Once we are
  // connected we set the connected flag to be true.
  if (doConnect == true) {
    if (connectToServer()) {
      Serial.println("We are now connected to the BLE Server.");
    } else {
      Serial.println("We have failed to connect to the server; there is nothing more we will do.");
    }
    doConnect = false;
  }

  // If we are connected to a peer BLE Server, update the characteristic each time we are reached
  // with the current time since boot.
  if (connected) {
    String newValue = "Time since boot: " + String(millis() / 1000);
    Serial.println("Setting new characteristic value to \"" + newValue + "\"");

    // Set the characteristic's value to be the array of bytes that is actually a string.
    pRemoteCharacteristic->writeValue(newValue.c_str(), newValue.length());

    byte Command[2][10] = {
      {0xea, 0xec, 0x70, 0xe3, 0xa2, 0xc1, 0x32, 0x71, 0x64, 0x9b}, // Celsius
      {0xea, 0xec, 0x70, 0xe2, 0xa2, 0xc1, 0x32, 0x71, 0x64, 0x98}  // Fahr
    };

    Serial.println("Celsius");
    pRemoteCharacteristic->writeValue(Command[0], sizeof(colors[0]));
    delay(2000);

    Serial.println("Fahr");
    pRemoteCharacteristic->writeValue(Command[1], sizeof(colors[1]));
    delay(2000);

  } else if (doScan) {
    BLEDevice::getScan()->start(0);  // this is just example to start scan after disconnect, most likely there is better way to do it in arduino
  }

  delay(1000); // Delay a second between loops.
} // End of loop